Apparatus for making mottled paper



April 35- o. H. HEDSTROMYJR 1,999,049

APPARATUS FOR MAKING MOTTLED PAPER Filed Oct. 24, 1933 2 Sheets-Sheet -lINVENTOR ATTORNEY Aprfifl 23, 1935. o. H. HEDSTROM, JR

APPARATUS FOR MAKING-'MOTTLED PAPER Filed Oct. 24, 1933 2 Sheets-Sheet 2INVENTOR ATTORNEY Fatcnted Apr. 23, 135

APPTEIS FOE nor IPAPR 01m n. Hedstrom, 31h, artiord Qity, In 7Application (lctober 24, 1933, Serial No. 695,6)t

5 liquid onto pulp,while' the saine is being carried through a'papermaking machine upon the usual 'Fourdrinier wire so that the merging ofthese charges of pulp and-liquid will produce a cloud effect or mottled,or variegated surface to the sheet paper form.

An object 'of the invention is to provide a machine for producingmottled or variegated paper so that the finished paper will present acloud effect, the machine being of novel construction so that the liquiddelivered to the paper pulp conveyed through the machine will be rainedupon the pulp and the quantity of such liquid maintained at determinedlevel in its container, the liquid being any paper flller of highopacity such as zinc oxide, titanium oxide, their sulphides, orasbestine, suspended in water, either alone or with dye.

Another object of the inventio is to provide a machine of the kinddescribed s that a supply of fluid in aplurality of streams or dropswill be directed onto pulp when traveling through the machine, inorderto break up the continuity or even upper surface of this pulp, wherebythe finished paper product will he possessed of mottled or variegatedefiect.

With the foregoing and other objects in view the invention consists inthe features of con-' struction, combination and arrangement of parts aswill be hereinafter more fully described in detail, illustrated in theaccompanying drawings,

which disclose the preferred embodiment of theinvention, and pointed outin the claim hereunto appended.

In the accompanyingdrawings:

Figure 1 is a side elevation of a paper making machine constructed inaccordance with the invention and showing the manner of carrying out themethod of producing mottled or variegated paper.

Figure 2 is a. fragmentary top plan view.

Figure 3 is a fragmentary vertical longitudinal sectional view.

- Figure 4 is a fragmentary elevation.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings. e

Referring to the drawings in detail, A designates the usual Fourdrinierwire of a paper making machine, with the ordinary supporting beamstherefor as the rollers III,. II and l2 and the breast and couch rollersl3 Coacting with the wire A is the deckle strap 05 which runs over thewheels l5 and H andis in contact with the wire A. The pulp is flowedonto the wire A in the usual manner and is then "conveyed through thepaper making machine conventionally.

Located above the wire A is a trough l8 preferably the width of the wireand having the rounded bottom it with a discharge mouth 28 receded fromone end, which is regulated or controlled by an adjustable gate 2 I.Into this trough iBjis received the fluid to be rained onto the pulpcarried by the wire A for producing mottled or variegated paper in thefinished product.

Leading from one side of the trough I8 at the selected point above thelowermost portion of the trough or its bottom i9 is an overflow levelingpipe 22 having and 24, respectively, the lowermost branch being.provided with a cut-ofl valve 25 and such branches open into the troughIt. The pipe 22 opens into a tank -26 carrying the supply of fluid forthetrough l8.

Located adjacent to the receptacle 26 he fluid pump 21, the same havingthe in lead 28 extended into the receptacle 26 and the out lead 29opening into the fluid from the receptacle 26 to the trough l8 can behad in the operation of the pump 21.

The trough i8 is carried by the supports 30 elevated from the wire A.

Working within the trough I8 is a rotary brush 3| having the prongs 32,these being staggered with respect to each other, and the axle 33 oflthebrush is suitably journaled and operated from a power source, the prongsbeing adapted to enter the liquid within the trough l8 at varying depthsto produce heavy or light eifect in the mottling or variegatingoperation of the machine, the level of the liquid within the trough l8being controlled by the several overflow branches 23 and 24 of pipe 22.The gate 2! when raised or lowered will vary the total amount of rainingof the liquid onto the pulp upon the wire A. This liquid as containedwithin the trough l8 may be any paper and M, respectively.

the superposed branches 23 trough 18 so thata forced feed of the L inthe trough i8 and the raining of such liquid being had by the brush 3!,so that the pulp will have intermingled therewith liquid, or such pulpwill be diluted so that a mottled or variegated effect to the finishedproduct of sheet paper will be had.

The method consists in providing an irregularly mottled sheet of paperby having the mottles of variations in color and opacity withoutvariations in thickness or surface or printing qualities of the finishedsheet of paper, the mottles being efiected by raining liquid upon thepulp being conveyed on a Fourdrinier wire.

What is claimed is:

The combination with a paper pulp conveyor,

receded portion in relatively close relation thereto,

a pump having a lead-in from the said means and an outlet opening intothe trough, and a gate adjustably related with the receded portion ofthe trough, the prongs of the brush being radially disposed andstaggered with respect to each other.

OLOF H. HEDSTROM, JR.

